Hi, I have my asterisk running directly plugged on an static public IP accessible by Internet. I try to contact an Cisco VoIP system on another static public IP address but asterisk return me 403 - Forbidden. When I debug sip flow, it tells me : Network Unreachable. I'ts certainly an error in my sip.conf but I can't find where it is... I'm sure about IP addresses. SIP.conf [general] port = 5060 bindaddr = 213.177.xxx.yyyy ; My Pubic Address. context = incoming_SIP disallow=all allow=alaw allow=gsm allow=ulaw #include sip_additional.conf Extensions.conf exten => 4700,1,Dial(SIP/4700@213.177.xxx.yyy|30|m) Adress to Contact... Please help Regards, Ignace